[2] Einer was born in 1896 in Copenhagen to Ellen Margrethe (née Wiegell) and Aage Louis Francis Ulrich.
[4] He competed in the 1926 Wimbledon Championships and reached the fourth round in the singles event in which he lost to Jean Borotra.
[3] Ulrich married three times and had four children: a daughter named Kirsten from his first marriage with Karen Rigmor Larsen,[3][4] a son (outside marriage with Tyra Liser) named Arne Erlandsen (1917 - 1988) and two sons with his second wife Ulla Meyer, also a tennis player and Danish champion.
[4] After the Nazi occupation of Denmark in 1940 the family decided to stay in the country despite the Jewish origin of Ulrich's then-wife Ulla.
[7] His family along with a group of other Jewish refugees were transported on a fishing boat by human traffickers across the Øresund strait when they were caught on the sea by the Germans.
[8] About six weeks later they decided to give the escape a second chance and this time they made it to Sweden with the help of probably-bribed customs officers.