I don't know the specifics but something elsee to consider is HOW the members of the Bhaibund married each other at any time. It is likely that it was not done so formally as today. I do, however, remember reading of contracts between the families involved.
1920: Om Radhe is born. She joined Om Mandli when she was of 17 years old. She become the President of Om Mandli. Lekhraj accepted and treated her as ‘spiritual daughter’, but married with her in 1953 and renamed her as ‘Sarswati’. She breathed her last on 24th of June, 1965. Lekhraj’s first/legal wife Yashoda breathed her last in 1961 after witnessing Lekhraj and Radhe as Better Half to each other for 12 years. Before Yashoda’s death her daughter informs from Mumbai to her Father Lekhraj who was in Madhuban, about Yashoda’s failing health, Lekhraj telegraphed her that runs: “Child ! don’t worry about any thing. She was your mother and my wife. Eat pudding even if your mother dies or if one’s wife passes away”. (Source: Autobiography of Dr.Nirmla Shanta)