Det eldste kjente medlem av denne familien Holst, også kalt Holst fra Ullensaker, er Thomas Rasmussen Holst, herredsfoegd i Frøslev herred ved Flensborg, gift med Kirstine Larsdatter. Deres sønn var Hans Thomassen Holst (1624-1704), født i Hanved sogn i Frøslev, død i Ullensaker, sorenskriver i Øvre Romerike og Odalen, bodde på Fladeby i Ullensaker, gift med Cathrine Alexandersdatter Bork (1640-1723). Deres sønn var ovennevnte Thomas Hansen Holst (se Stamtavlen, side 105 og 106)

The oldest known member of this Holst family, also called Holst from Ullensaker, is Thomas Rasmussen Holst, county bailiff in the Frøslev county at Flensborg, married to Kirstine Larsdatter. Their son was Hans Thomassen Holst (1624-1704), born in Hanved parish in Frøslev, died in Ullensaker, district stipendiary magistrate in Upper Romerike and Odalen, lived at Fladeby in Ullensaker, married to Cathrine Alexandersdatter Bork (1640-1723). Their son was the above mentioned Thomas Hansen Holst (See The Family Tree, page 105 and 106)