EdRip said the transaction, which was also backed by Crédit Agricole Investment Regions, was completed in parallel with the acquisition of Groupe Elsewhere-OVP.
Siparex used its €124m Midcap I fund launched in 2006 for the deal, while EdRIP made the investment through its small cap Capstan vehicle.
The firm has closed its Siparex Midcap II vehicle on €130m last year.
Groupe Marietton, which was launched in 1968, operates tours in France, the Mediterranean and Tunisia.
EdRIP investment director Nam Metzger said the company was primed to take market share in an industry where big tourism players were currently holding defensive positions.
Financing for the acquisition comprised senior debt arranged by LCL and Crédit Agricole Centre-Est.
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