Ibby: nickname for Isabel.

ibidem (ibid.): (latin) "in the same place," used to indicate a source or reference is the same as that previously described

in capite: (latin) in chief; in England, "tenure in capite" was a holding directly from the crown. See also socage.

in-law: in early documents, particularly pre-1700, might indicate any relationship under the law; i.e., a man's father in law might be his wife's father or might be his mother's husband (step-father). His brother in law might be his sister's husband, his wife's brother, her sister's husband, or his own step- or half-brother. Example

"in room of": in place of. Example

indenture a deed or agreement (contract) executed between two or more parties

indentured servant an individual voluntarily or involuntarily contracted to working for another for a fixed number of years (often four to seven) in exchange for specific considerations (such as passage to the Colonies in the 17th and 18th centuries), usually including freeman status. See also apprentice and Freedom of the City (London).

inquisition post mortem: in England, a hearing conducted following the death of any individual who held land either directly under the king, or on behalf of a minor who held land under the king, its purpose to identify the land and heirs, if any. Example

intestate: having no legal will. Example. See also Maryland Testamentary Acts

investiture: (medieval) delivery of property or title.