Short answers, pulled from the story.
Gabriel Honoré Marcel entered the world on the 7th of December 1889 in Paris, France. He grew up under the care of his aunt and father Henry Marcel after his mother Laure Meyer died when he was very young.
Marcel often faced classification as one of the earliest existentialists in philosophical circles but preferred terms like philosophy of existence or neo-Socrateanism to define his own thought. Søren Kierkegaard served as a model since he was a neo-Socratic thinker himself.
Gabriel Marcel remained agnostic until his conversion to Catholicism occurred in 1929 which marked a significant personal transformation from his father's agnosticism. This change influenced how he viewed relationships between individuals and communities while giving new depth to his philosophical explorations of hope and fidelity.
Major texts included Metaphysical Journal published in 1927 and Being and Having released in 1933. Homo Viator appeared in 1945 while The Mystery of Being emerged as a two-volume work published in 1951 following Gifford Lectures delivered at Aberdeen University between 1949 and 1950.
Jean Wahl Paul Ricœur Emmanuel Levinas and Jean-Paul Sartre attended these meetings regularly. Karol Wojtyla who became Pope John Paul II drew on Marcel's distinction between being and having for his critique of technological change affecting modern society.