In September 1907 she married physician Harald Mathias "Mads" Gram, a son of Jens Gram and maternal grandson of P. A. Munch [REF].
Mads and Irma's son Peder "Per" Gram became a barrister and married alpine skier Johanne "Hannemor" Dybwad, a daughter of Niels Juell Dybwad and granddaughter of Johanne Dybwad.