Complex sentence: Conn was a doctor, Patricia a social worker who had worked in Glasgow for a period and who had a background in housing activism, who were involved in the Homeless Citizens League, an organisation founded after Catholic women occupied disused social housing.
Split into simpler sentences: Conn was a doctor, and Patricia was a social worker who had worked in Glasgow for a period, and who had a background in housing activism. Both were were involved in the Homeless Citizens League, an organisation founded after Catholic women occupied disused social housing.