As such his group of uncles included Constitutional founding fathers Niels, Jacob and Jørgen Aall.
The oldest sisters Didricha and Louise were married consecutively to bishop and politician Jens Lauritz Arup.
The fourth sister Benedicte married their cousin Hans Blom Cappelen; from this marriage, Jørgen got a nephew Didrik who became a member of parliament, and a niece Marie who married Fritz Trampe Flood of the notable Flood ship-owner family.
[4] Ulrik Frederik Cappelen instead started a career as a civil servant, like his older brother Nicolai Benjamin.
[6] However, in July the same year he was appointed County Governor of Jarlsberg og Laurvigs amt (today named Vestfold).