The tweeter handle of @JoCoxFoundation, a foundation that brings together people & organisations to fight for the fairer, kinder & more tolerant world the late Jo Cox MP believed in, made this known to newsmen.
Crouch is the current junior minister for sport and civil society.
The prime minister is expected to formally announce the appointment on Wednesday and say she has accepted numerous recommendations made by the commission.
Cox was an advocate for those affected by isolation and loneliness during her time serving the British Parliament.
"Young or old, loneliness doesn't discriminate".
Mrs May said: "For far too many people, loneliness is the sad reality of modern life".
By Foreign and Commonwealth Office [CC BY 2.0], via Wikimedia CommonsIt's been more than a year since Britain voted to leave the European Union, and the already serious problem the country had with loneliness seemed to have worsened since then.
A minister for loneliness has been appointed to help tackle the misery endured by around nine million Britons. "This is an issue that Jo cared passionately about and we will honour her memory by tackling it, helping the millions of people across the United Kingdom who suffer from loneliness", she said.
The government stepping in with tax-funded programmes and initiatives to help the lonely make friends and connect with those local to them is the state taking over functions that until comparatively recently, society and local community provided autonomously. Crouch will lead a cross-government group which will "take responsibility for driving action on loneliness across all parts of government and keeping it firmly on the agenda".
"Throughout 2017 we have heard from new parents, children, disabled people, carers, refugees and older people about their experience of loneliness", Ms.Reeves and Ms.Kennedy added.
Supporting the launch, Mark Robinson, Chief Officer of Age UK Barnet, cited research on the health impacts of being lonely, which found that having no human contact was as damaging as smoking 15 cigarettes a day.
The Government will publish a cross-Government strategy on loneliness in England later this year and has begun work on establishing a fund to encourage innovative and community-based solutions for the issue.