An instrument in writing granted by the judge or officer having jurisdiction of the probate of wills, after the probate of a will, to an executor, authorizing him to act as such. It is issued by the probate officer under his hand and official seal, making known that at a certain date the last will and testament of A B (naming the testator) was duly proved before him that the probate and grant of administration was within his jurisdiction, and certifying accordingly "that the administration of all and singular the goods, chat- tels, and credits of the said deceased, and any way concerning his will, was granted" to CD," the executor named in the said will," " he having been already sworn well and faithfully to administer the same, and to make a true and perfect inventory. etc., and to exhibit the same, etc., and also to ren- der a just and true account thereof." In England, the original will is deposited in the registry of the ordinary or metropolitan, and a copy thereof made out under his seal; which copy and the letters testamentary are usually styled the probate. This practice has been followed in some of the United States; but where the will needs to be proved in more than one state, the impounding of it leads to much inconvenience. In other states, the original will is returned to the executor, with a certificate that it has been duly proved and re- corded, and the letters testamentary are a separate instrument. The letters are usually general; but may be limited as to the locality within which the executor is to act, as to the subject-matter over which he is to have control, or otherwise, as the exigencies of the case or the express directions of the testator may require. Letters testamentary are granted in case the de- cedent dies testate; letters of administration, in case he dies intestate, or fails to provide an exec- utor; see ADMINISTRATION, EXECUTOR; but in re- gard to all matters coming properly under the heads of letters of administration or letters testa- mentary, there is little or no difference in the law relating to the two instruments. Letters testamentary and of administra- tion are, according to their terms and ex- tent, conclusive as to personal property while they remain unrevoked. They can- not be questioned in a court of law or of equity, and cannot be impeached, even by evidence of fraud or forgery. Proof that the testator was insane, or that the will was forged, is inadmissible; 12 Ves. 298; 21 Wall. 503; 27 Me. 17; 49 Ν. Η. 295; 75 Pa. 503; 16 Mass. 433; 19 Johns. 386; 10 Ala. 977; 18 Cal. 499; 60 N. Y. 128; 14 Ga. 185; 33 Neb. 509; 113 N. Y. 511; 24 Fla. 237. But if the nature of the ples raise the issue, it may be shown that the court granting the supposed letters had no juris- diction, and that its action is therefore a nullity; 3 Term 130; see 77 Hun 230; or that the seal attached to the supposed pro- bate has been forged, or that the letters have been revoked, or that the testator is alive; 15 S. & R. 42; 9 Dana 41; 8 Cra. 9; 3 Allen 87; 25 Ala. 408; 70 Tex. 538. Where an executor qualified and acted for many years under his appointment, he will not be allowed to dispute the recitation in his appointment that citation to the heirs was issued and served; 95 Cal. 34. At common law the executor or adminis- trator has no power over real estate; nor is the probate even admissible as evidence that the instrument is a will, or is an exe- cution of a power to charge land; Wms. Ex. 562. By statute, in some states, the probate is made prima facie or conclusive evidence as to realty; 17 Mass. 68; 23 Conn. 1; 10 Wheat. 470; 3 Pa. 498; 8 B. Monr. 340; 5 La. 388. In some states the probate is made after the lapse of a certain time conclusive as to realty; 9 Pet. 180; 75 Pa. 512; 8 Ohio 246; 26 Ala. 524; 6 Gratt. 564; 8 Wright 189. Land in England under the Land Title and Transfer Act of 1897 goes to the executor or administrator. See LAND